ionics crash tested a 1000l system at 30mph, now if im going faster than that i would still rather have that than one that isnt, also the tank goes down during the day and so does the danger.
there finace pakages are very good to, nice new van top of the range system and no problems, thats the way I like it.
At the moment I also have through them a renault master with 1000l 2 man set up, speedliner floor, great sign writting, the works. cost me £500 a month over 5 years wich is nothing to the 8k a month its turning over, and it can easily carry all the other kits, jet wash, gutter vac and so on, it really is the daddy of wfp vehicles and systems.
as with most things in life there is always something cheaper, but thats not always the way to do it, at the end of the day, its the tool you earn your living with, it can never be too good. I would rather have a new vehicle with a safe system, simple.